Fixed handling of relative URIs in <base/> tags

spider.php

@@ -252,6 +252,11 @@ while($continue_loop):
 // Those lazy fools wrote bad markup and put errors in our buffer.
 // We should clear them.
 				libxml_clear_errors();
+/**
+ * If we set the document URI, the base URI resolver is able to handle
+ * <base/> tags that specify a relative base.
+**/
+				$DOMDocument->documentURI = $URI;
 /**
  * This is just a little witchery to find the base URI only once
  * instead of having to find it again for each <a/> tag. If we used the